Adjusting and cleaning of a tail pulley on a 110' Masaba Conveyor LOTO was not performed by the EE before entering the tail pulley section of the conveyor. Belt was energized by the operator; EE was in tangled in the pulley from his feet to his mid section of his body. EE was fatally injured.
N R Hamm Quarry LLC operator
Controlled by
Summit Materials LLC
MSHA operator ID: L00313
Compliance record
MSHA citations since 2000
829
citations
173
significant & substantial
$335,854
proposed penalties
$267,853
paid to date
80% of proposed penalties paid to date, a $68,001 gap.
Source: MSHA violations data, updated weekly.
Inspection activity
MSHA inspections since 2000
510
inspections on record
6,504
inspection hours
12.7
citations per 100 inspection hours
ⓘ
This rate is recorded citations divided by MSHA inspection hours, per 100 hours. It reflects inspection effort, not mine size or production.829 citations across 6,504 inspection hours.
Source: MSHA inspections data, updated weekly.
Penalty disposition
ⓘ
Differences between proposed and paid penalties reflect both settlements and conference reductions and amounts still owed. Outstanding is the balance currently owed.$336K
proposed penalties
$271K
current assessed
$268K
paid to date
$3K
outstanding
819 assessments are final orders; 10 contested dockets.
As of the most recent assessment on 2026-03-02.
Source: MSHA assessed-violations and conference/litigation data, updated weekly.
Top causes
- POWERED HAULAGE 1 fatality · 10 non-fatal
- HANDLING OF MATERIALS 35 non-fatal
- SLIP OR FALL OF PERSON 21 non-fatal
- HANDTOOLS (NONPOWERED) 13 non-fatal
- MACHINERY 8 non-fatal
- FALL OF ROOF OR BACK 3 non-fatal
Incident timeline
2026
2
2025
5
2024
4
2023
1
2022
3
2021
7
2020
1
2019
5
2017
1
2015
1
2014
1
2010
1 (1f)
2008
2
2007
1
2005
1
2003
2
2002
1
2001
1
2000
2
1999
3
1998
2
1997
2
1996
5
1995
2
1994
6
1993
5
1992
12
1991
5
1990
9
1989
4
1988
1
1984
2
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- PLANT #80001 KS
- Plant #80007 KS
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Fatalities under this operator
1 recorded
October 16, 2010
KS · Metal/Non-Metal
haul/off road/coal/ore/pit/quarry/rock/rubber tire truck driver, transportation truck driver
Fatality · POWERED HAULAGE
N R Hamm Quarry LLC · Caught in, under or between two or more moving objects
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The full compliance file on N R Hamm Quarry LLC
A dated report covering the 26-year penalty trail, line-item violation pattern, contest and docket posture, rate-normalized peer benchmark, and full fatality history. Delivered as a PDF with the underlying data as CSV.